# NousResearch/hermes-agent · Langfuse plugin tracing improvements and fixes

## Open now

- Nothing open on GitHub.

These issues and pull requests address bugs and feature additions in the Langfuse plugin, including surfacing reasoning_content from certain model conventions and expanding trace coverage to errors, sessions, subagents, and MoA fan-out scenarios.

## TL;DR

- 5 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 3 PR(s) closed without merging.
- A fix was merged to main in PR #85439. Verify it addresses your case.
- **Recommended:** read PR #85439 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-85439`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.40`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #29482: \[Bug\]: Langfuse plugin shows reasoning: None for reasoning_content models (DeepSeek/Qwen/LM Studio convention)

## Prior & competing PRs

- **#85439: feat(langfuse): widen tracing to errors, sessions, subagents, and MoA fan-out**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `agent/conversation_loop.py`, `agent/moa_loop.py`, `agent/moa_trace.py`, `agent/redact.py`, `hermes_cli/config.py`, `hermes_cli/hooks.py`, `plugins/observability/langfuse/README.md`, `plugins/observability/langfuse/__init__.py`, `plugins/observability/langfuse/plugin.yaml`, `tests/agent/test_moa_observability_bridge.py`, `tests/plugins/test_langfuse_plugin.py`
- **#29486: fix(plugins): surface reasoning_content in Langfuse assistant message (#29482)**. closed without merge
  - maintainer direction: category `stale_abandoned`; implication `active`
- **#39653: fix(langfuse): surface reasoning_content in traces (#29482)**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#85439`
- **#83437: feat(langfuse): widen tracing to errors, sessions, subagents, and MoA fan-out**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#85439`

## Fix status

- Merged to main in PR #85439 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-13`.
- Subsystem: `agent`